I am reading that "pinning" on pintrest could violate copyright laws (DMCA) but what about following pinners or boards?

The Terms for Pintrest are the first guide regarding participating on that specific site. Next of importance are laws regarding Copyright...

Short phrases are not usually protected by copyright. However, the phrase cited by the Asker is from a well known and famous author. Caution. ...

My 10 year old is writing a kids book abt a "purple ninja" called "purple power." How can she reword to keep the story?

Titles and short phrases are not protected by copyright. But authorship substantially similar to another's work is copyright infringement. The...

Could I be sued for Copyrights infringement for using a song in a commercial/advertisement on my business website?

Yes, the use is infringing. Fair Use is "comment, criticism, news-reporting, teaching, scholarship or research." Fair Use is a defense to be...

What do I need to do if I want make t shirts with reference a specific city or athletes in that city?

Re: athletes, get permission. Same for stadiums which are private businesses. For Cities, likely no limitation. See Intellectual Property counsel.

Can I sell a photo that contains the image of a Disney character even if the photo is not of the character itself?

If the Disney item is a copyright interest then your use is likely infringing unless you have permission. Software is used to detect even...

The author of the work, in this case the photograph, owns the copyright interest absent a contract or employment issue. However, the use of the...

Am I allowed to use old photographs that belong to the public domain with identifiable people in work that could be commercial?

Whether in the public domain or not requires assistance from Counsel. Use for any purpose may be limited in that some purposes will be prohibited...

Can a member of a partnership establish a trademark as a sole owner of a business

Facts and research required for your Intellectual Property counsel to consider and then advise. See Intellectual Property counsel.

Can I sell a game that uses the names and likenesses of contemporary and historical politicians?

Politicians have very little protection from opinion. It is likely that you are free to be satirical. But, see Intellectual Property counsel.